Historiann’s post notes that a few weeks ago, a masked man opened the door to a campus lecture hall where her colleague was giving a mid-term “and started screaming semi-coherently. He then slammed the door to the lecture hall and moved on to scream at the class next door.” Turns out this was just a “prank.” Historiann observed: “One thing I was grateful for was that despite the Masked Intruder’s juvenile and thoughtless behavior, I am glad that he wasn’t shot dead by a Concealed-Carry Avenger who brought a gun to his exam.”